Rotary web-printing press



Oct. 22, 1929. H. M. BARBER ROTARY WEB PRINTING PRESS 0 Filed Feb. 24, 1928 :s Sheets-Sheet INVENTOR llll ATTORNEYS Oct. 22, 1929. H. BARBER v ROTARY WEB PRINTING PRESS Filed Feb. 24, 1928 3 Sheets-Sheet 2 ATTORNEYS Oct. 22,1929. H. M'. BARBER ROTARY WEB PRINTING PRESS Filed Feb. 24, 1928 s Sheets-Sheet 5 4 v I INVENTOR ATTORNEYS Patented Oct. 22, 1929 "UNITED STATES PATENT caries HOWARDIMI. BARBER, OF PAWCATUCK, RHODE- I ISLAND, ASSIGNOR TO 0. B. COTTIBJELL & SONS COMPANY, OF WESTERLY, RHODE ISLAND, A CORPORATION OF DELAWARE ROTARY WEB-PRINTING PRESS Application filed February 24, 1928. Serial No. 250,663.

The object of my present invention is to provide a rotary web printing press which 1s especially designed for so called bag printing; whereby the printed web which may be of thin or loosely woven material, such as burlap, is cut into bag blanks or sheets of different lengths as desired, the

successive printings on the web being spaced at difierent distances apart according to the length of the sheet-s to be cut from the web.

My invention comprises an impression cylinder of a predetermined diameter and coacting form cylindersof different corresponding diameters, which form cylinders I Willhereinafterdesignate as change form cylinders, as they may be of any desired diameters within a reasonablexrange, and not necessarily sub-multiples of, the diameter of the impressioncylinder, to suit bag blanks or sheets of difl'erent lengths; the form cylinders of one diameter for one predetermined length of sheet being readily changed for form cylinders of another diameter for another predetermined length of sheet, without rebuilding the press.

My invention further comprises a change gear drive for the printing mechanism and is represented in the accompanying the sheet cutting mechanism so that the rotary cutter for severing the sheets from the web will rotate synchronously with the change form cylinders of difi'erent diameters, thereby making a cut for each printed sheet.

My invention still further comprises means whereby the inking mechanisms for the form cylinders may be readily adjusted to coact responding diameters are used for print-ing the web for long sheets.

Fig. 2 represents a detail horizontal section taken in the plane of the line II of Fig. 1, looking in the direction of the arrows.

Fig. 3 represents a view similar to Fig. 1 with the parts in the positions they assume when relatively small change form cylinders of corresponding diameters are employed for printing the web for shorter sheets.

Fig. 4 represents a detail side View showing the inking mechanism stand sections adjusted to another position from that shown 1n Fig. 3. p

' Fig. 5 represents a detail side view of the from the web, showing also a portion of the web printing mechanism, the parts being in the positions they assume for coaction with. the smaller change form cylinders shown in Fig. 6 represents a detail horizontal section taken in the plane of the line VI-VI of Fig. 5, looking in the direction of the. ar-

rows.

Fi 7 represents a similar detail section showing the slidable memberof the double clutch gear moved to drive the rotary sheet cutter synchronously with the larger change form cylinders shown in Fig. 1.

The mai frame of the press is denoted by 1 in which 5e suitably mounted the web supply r0112 and the impression cylinder 3. Four change form cylinders 4, 5, 6, 7 of corresponding large diameters and driven from the impression cylinder, are represented in Fig. 1, and four change form cylinders 8, 9, 10, 11 of corresponding small diameters and driven from the impression cylinder, are shown in Fig. 3, which change fiorm cylinders are mounted in radially adjiistable bearings 12,

13, 14,15, carried by the main trame 1 for bringing each group of change form cylinders into coaction with theimpressioncylinder 3. Only two sets of change form cylinders are represented herein but it is to be understood that these change form cylinders may be of any desired corresponding diameters, not necessarily sub-multiples of the diameter of the impression cylinder, so that the successive 85 mechanism for cutting the printed sheets printings on the web may be spaced any desired distances apart, within reasonable limits, to suit sheets of different lengths to be cut from the web.

The mechanism for cutting sheets of the desired length from the web is herein shown as comprising a rotary cutter 16, arranged to coact with a stationary cutter 17. The web feeding rolls, 18, 19, 20 are driven at a constant speed from the impression cylinder 3 through the train of gearing 21, 22, 23, 24, 25, 26, 27, 28. A suitable guide 29 may be provided between the feeding roll 20 and the sheet cutters 16, 17.

The means for driving the printing and cutting mechanisms'includes a change gear of the same diameter as the change form cylinders or a sub-multiple thereof, whereby the rotary sheet cutter and the form cylinders may be driven in synchronism with each other.

In Fig. 1 the change gear 30 on the drive shaft 33 is shown meshing with an intermediate gear 31 which, in turn, meshes withithe impression cylinder gear 21 while in Fig. 3 the change gear 32 of a different diameter is shown meshing with the intermediate gear 31,

the intermediate gear 31 being adjustable for different diameters of change gears in an arc concentric with the axis of the impressioncylinder 3. These change gears may be of the same diameter as the change form cylinders or a sub-multiple thereof according to the length of sheet to be cut from the web. In the present instance in Fig. 1, I have shown the change gear 30 as being one-half the diameter of the group of change form cylinders4,5, 6, 7 while in Fig. 3 I have shown thechange gear 32 the same diameter as the change form cylinders 8, 9, 10, 11. The drive shaft 33 on which the change gear is mounted is prof'vided with a' bevel gear 34 which meshes with a bevel gear 35 fast on a horizontal shaft 36, which shaft has two bevel gears 37, 38 loosely mounted thereon, the bevel gear 38 being twice the diameter of the bevel gear 37. The,

bevel ear 37 provided with one member 39 of a ouble clutch gear and the bevel gear 38 is provided with the other member 40 of the double clutch gear. The movable member 41 of the double clutch gear is slidably interlocked with the shaft 36 and is arranged to be brought into clutching engagement with either I the gear 37 or the gear 38. When the movable member 41 is enga ed with the-member 40 the rotary cutter 16 is riven from thebevel gear 38 through the train of gears which includes the bevel gear. 42, the spur gear, 43, idler gear 44 and rotary cutter gear 45. When the movable member 41 is engaged with the member 39 the rotary cutter 16 is driven from the bevel gear 37 through the train of gears which includes the bevel gear 46, the spur gear 47, r gear 43, idler gear 44 and rotary cutter gear 45.

The reason for using this double clutch gear mechanism is that when printing and cuttin short and medium length sheets it is desira 1e to use a change ear 32 of the same diameter as the change orm cylinders and when )rinting and cutting longer sheets it is desira Is that the'change gear 30 be one-half the diameter of the change form cylinders and the drive shaft will then make two revolutions .the several cylinders be not only adjustable as a whole toward and away from their change form cylinders but also that means must be provided for moving certain of the inking mechanisms independently of the other inking mechanisms. The inking mechanism stand is divided horizontally into a main lower section 49 and upper and intermediate auxiliary sections 50 and 51. The inking mechanism carried by the main stand section 49 is denoted as a whole by 52 and it is provided with a pair of inking rollers 53, 53, arranged to be brought into and out ofvcoaction with the lower change form cylinder. The inking mechanism carried by the upper stand section 50 is denoted as a whole by 54 and it is provided with a pair of inking rollers 55, 55, arranged to be brought into and out of coaction with the upper change form cylinder. The two inking mechanisms carried by the intermediate stand section 51 are denoted as a whole by 56 and 57, the mechanism 56 being provided with a pair of inking rollers 58, 58, arranged to be brought into and out of coac-f tion with one of the intermediate change form cylinders and the other inking-mechanism 57 being provided with a pair of inking rollers 59, 59, arranged to be brought into and out of coaction with the other intermediate change form cylinder. All of these inking rollers are individually adjustable, as follows. for properly positioning them with respect 0 their respective change form cylinders. The supports 72, 73, 74 and 75 for the inking rollers 53, 55, 58 and 59 are providedwith bolts 76, 77, 78 and 79 which pass through elongated slots 80, 81, 82 and 83 in their respective stand sections, 49, 50 and 51, said bolts having nuts 84, 85, 86 and 87 for locking the inking roller supports in their adjusted positions. I The-sectional inking-mechanism stand asa whole may be moved toward and away from the change form cylinders in the usual manner by the hand wheel 60 carried by the main stand section 49. The auxiliary stand section 50 may be adjusted with respect to the intermediate stand section 51 and the said stand section 51 may be adjusted with respect to the main stand section 49 by any desired cross shaft 61 having bevel gears 62, 62 meshing with bevel gears 63, 63, carried by screws 64, 64 engaging the projections 65, 65 of the intermediate stand section 51; the shaft 61 having a suitable handle 66 for manipulating it.

I have shown a similar device carried by the upper auxiliary section 50 and operated by the handle 67 for adjusting the stand section 50 along the intermediate stand section 51.

The sectional inking mechanism stand as a whole may be locked in its'adjusted position with the inking rollers in contact with their change form cylinders, as, for instance, at the intermediate stand section by a bolt 69 passing through the horizontal elongated slot 68 in the intermediate stand section and also at the upper stand section by a bolt 70 passing through one of a series of holes 71 in the main name into engagement with the said stand section.

I From the above description it will be seen that I am enabled to provide a rotary web printing press in which a fixed size of im- 2 pression cylinder may be used in coaction eters coacting therewith and arranged in difwith change form cylinders of various diameters'according to the length of'sheet which is to be cut from the printed web, the diameters of the form rollers notnecessarily being submultiples of the diameter of the impression cylinder, means including a change gear being provided, whereby the rotary cutter may be driven synchronously with the form cylinders, and a sectional stand for the inking mechanism being provided whereby the inking rollers may be adjusted to contact with form cylinders of various diameters.

That I claim is 1. In a multi-color rotary web printing press, an impression cylinder, change form cylinders of different corresponding diamferent' vertical transverse planes along the same side of the impression cylinder, inking mechanisms for the form cylinders, means for moving the inking mechanisms as a wholetoward'and away from their form cylinders, and means for independently adjusting certain of the inking mechanisms.

2. In a multi-rolor rotary web printing press, an impression cylinder, change form cylinders of different corresponding diameters coacting therewith and arranged in differentvertical transverse planes along the same side of the impression cylinder, inking mechanisms for the form cylinders comprising a pair of inking rollers, means for moving the inking mechanisms as ,a whole toward and away from their form cylinders, means for independently adjusting each inking roll-.

er, and means for independently adjusting certain of-the inking mechanisms.

3.-In a multi color rotary web printing press, an impression cylinder, change form cylinders of different corresponding diamferent vertical transverse planes along the same side of the impression cylinder, inking mechanisms for the form cylinders, a sectional stand for the inking mechanisms, means for moving the stand as'a whole toward and away from theform cylinders, and means for independently adjusting certain of the stand sections.- 1

4. In a multi-color rotary web printing press, an impression cylinder, change form cylinders of ditl'e'rent corresponding diameters coacting therewith and arranged in different vertical transverse planes along the same side of the impression cylinder, inking mechanisms for the form cylinders, a stand for the inking mechanisms divided into main and auxiliary sections, means for moving the stand as a' whole toward and away from the form cylinders, and means for independently adjusting the auxiliary section or sections.

5. In a rotary web printing press, an impression cylinder, a change form cylinder coacting therewith, a radially adjustable sup port for the form cylinder, a drive for the impression cylinder includinga change gear, and an intermediate gear adjustable along an arc concentric with the axis of the impression cylinder for change'gears of ditlerent diameters.

6, In a rotary web printing press, an impression cylinder, a change form cylinder coacting therewith, a radially adjustable support for the form cylinder, a drive for the impression cylinder including a change gear, and an intermediate gear adjustable along an arc concentric with the axis of the impression cylinder forehange gears of different diameters, the change gear having the same diameter as the form cylinder or a sub-multiple thereof. v

7. In a multi-color rotary web printing press, an impression cylinder, change form cylinders coacting therewith, radially adj ustable supports forthe form cylinders, a drive for the impression cylinder including a change gear and an intermediate gear adjustable along an arc concentricwith the axis of the impression cylinder for change gears of different diameters. 1

8. Ina 'multi-color rotary web printing press, an impression cylinder, change form cylinders coacting therewith, radially adj ustable supports for the form cylinders, a drive for the impression cylinder including a change gear, and an intermediate gear adjustable along an arc concentric with the axis of the impression cylinder for change gears of different diameters, the change gear having the same diameter as the form cylinders 01" a sub-multiple thereof.

9. In combination, an impression cylinder,

lengths from the web, and 'means for driving the form cylinder and cutter in synchronism, said means including'a change gear and a double clutch.

10. In combination, an impression cylinder, a changeform cylinder coacting therewith, a rotary cutter for severing sheets of different lengths from the web, and means for driving the form cylinder and cutter in synchronism,. said means including a change gear having the same diameter as the form cylinder or a sub-multiple thereof.

11. In combination, an' impression cylinder, a change form cylinder coacting therewith, a rotary cutter for severing sheets of different lengths from the web, and means for driving the form cylinder and cutter in synchronism, said means including a change gear and a double clutch, said change gear having the same diameter as the form cylinder or a submultiple thereof.

12. In combination, an impression cylinder, and change form cylinders coacting therewith, a rotary cutter for severing sheets of different lengths from the web, and means for driving the form cylinders and the cutter in synchronism, said means including a change gear.

13. In combination, an impression cylinder and change form cylinders coacting therewith a rotary cutter for severing sheets of different lengths from the web, and means for driving the form cylinders and the cutter in synchronism, said means including a change gear and a double clutch.

14. In combination, an impression cylinder and a plurality of change form cylinders coacting therewith, a rotary cutter for severing sheets of different lengths from the web, and means for driving the form cylinders and the cutter in synchronism, said means including a change gear having the same diameter as the form cylinders or a sub-multiple thereof.

15. In combination, an impression cylinder and a plurality of change form cylinders coacting therewith, a rotary cutter for severing sheets of different lengths from the web, and means for driving the form cylinders and the cutter in synchronism, said means including a change gear and a double clutch, said change gear having the same diameter as the form cylindersor a sub-multiple thereof.

In testimony, that I claim the foregoing as my invention, I have signed my name this 23rd day of February, 1928.

HOWARD M. BARBER. 

